Marking device



FIG. 1 is a top isometric view of an embodiment of a marking device.

FIG. 2 is a bottom isometric view of the marking device of FIG. 1.

FIG. 3 is a top plan view of the marking device of FIG. 1.

FIG. 4 is a bottom plan view of the marking device of FIG. 1.

FIG. 5 is a front elevational view of the marking device of FIG. 1.

FIG. 6 is a rear elevational view of the marking device of FIG. 1.

FIG. 7 is a left side elevational view of the marking device of FIG. 1; and,

FIG. 8 is a right side elevational view of the marking device of FIG. 1. 

CLAIM The ornamental design for a marking device, as shown and described. 